Combination flowing device



March 6, 1934. H. E. BROCK Er Ax.

COMBINATION FLONING DEVICE lfm Filed May 1.3, 1952 ATTORNEY Patented Mar. 6, 1.934l

orifice COMBINATION FLoWING DEVICE Harley E. Brock and Frank C. Brazell, Okemah, Okla.

Application May 13, 1932, Serial No. 611,197

2 Claims.

This invention relates broadly to an improved well and has particular reference to a flowing device for oil or water wells of a construction that will keep the pressure oi the sand at the bottom of the well and cause the well to flow in a steady manner but with less pressure.

The invention will be fully and comprehensively understood from a consideration of the following detailed description when read in connection with the accompanying drawing which forms part of the application, with the understanding, however, that the improvement is capable of extended application and is not conned to the exact showing of the drawing nor to the precise construction described and, therefore, such changes and modifications may be made therefrom as do not affect the spirit of the invention nor exceed the scope thereof as expressed in the appended claims.

In the drawing:

Figure l is a central vertical sectional View through an improved well in accordance with this invention.

Figure 2 is a sectional view on the line 2-2 of Figure 1.

Figure 3 is a sectional view the line 3--3 of Figure l.

Referring now to the drawing in detail, the numeral 1 designates the well casing which is sunk into the ground in the usual way. In the casing there is the oil or water ilow tube 2 constructed of any desired number of sections whose confronting ends are threaded and which threaded ends are engaged by coupling sleeves 3. Two of the confronting ends of the tube 2 are screwed in threaded portions at the ends of central cylindrical part or bore 4 of the cylindrical casing 5 for a packer 6. The outer face of the casing 5 is open and the tube 2 and packer are lowered a desired distance into the well casing 1 so that the lower end or" the tube is arranged in the oil sand, when the device is employed in an oil well as will hereinafter be described.

The section of the tube 2 directly above the approximately on packer 6 has a downwardly tapered or funnelshaped portion 7 integrally formed therewith, the lower end of which being straight and interiorly threaded and the said threaded portion is designed to be engaged by the lower and valve carrying seat end of a short tube 8. The valve 9 for the seat is of spherical formation and normally fully occupies and closes the opening through the seat which is indicated for distinction by the numeral 10.

On the top of the short tube 8 there is screwed (Cl. 10S-233) or otherwise xed a cage 11 that has spaced openings 12, adjacent to the top thereof, and these openings afford oil outletsand cannot be closed by the valve 9, although the pressure of the oil will elevate the valve'into the cage 11. 60 The openings 12 also serve to seat the valve 9 when pressure in the tube above the valve is greater than the pressure below the valve. Above the funnel-shaped member and the valve cage 1l the flow tube section is provided with openings that communicate with the space between the said tube and the casing 1 but these openings are surrounded by integrally formed short V pipes whose lower ends 13 are disposed at upward angles and which angle ends merge into vertical pipes 14. The pipes 14 have screwed to their upper ends preferably two-part cages 15, respectively, each of the lower tube or cage section having a seat 16 for a ball valve 17, and the upper portion of the cage is provided y with a series of spaced openings 18 arranged a suitable distance below the closed top of the cage. The cage sections are of tubiform.

One of the upper ow tubes 2 is formed with a downwardly extended and rounded gas inlet pipe 19 that communicates with the space between the said tube and casing and this tube had screwed therearound the cap for a cylindrical valve casing 20. In the casing 2O there is a plunger valve 21 that hah centrally xed thereon a valve stem 85 22 that projects in both directions from the said valve 2l. The outer end of the valve stern 22 is rounded and finds a seat in a depressed portion aiorded by the inner wall of the removable cap or head 23. The second and lower end of the valve casing 2O has screwed therein a plug 24 which is preferably in the nature of a packing box and through which plug or box 24 the lower end 25 of the stem 22 passes. The lower or outer end of the stem section 25 has removably screwed 9 thereon a disc head 26 and a coiled expansion spring 27 exerts a tension between the inner face of the plug and the bottom of the cylindrical valve 21.

The discharge tube 2 leads to the tanks for 100 the oil and the closed top of the casing 1 has connected thereto a valve controlled compressed air or gas conducting pipe 29.

To start a flow of the uid from the well, pressure from a suitable source is admitted to the casing 1 by opening the valve 29 and the pressure is prevented from acting on the sands of the well by the packer. The pressure enters the tube 2 from the casing 1 by the pipes 14 and escapes upwardly, creating a suction in the tube 2 which acts to raise the fluid of the well in the tube and starts said well flowing. Air pressure also enters the tube 2 by Way of the pipe 19 and ports 28 by unseating the valve 22 and uncovering the ports 28 by the plunger valve 21. This additional air pressure passes upwardly in the tube 2 cooperating with the air pressure received from the pipes 14 in starting the flow of liquid from the well. As the ow of liquid is upwardly through the tube 2, it acts upon the head 26 and with the aid of the spring 27 seats the valve 22 and also closes the ports 28 by the plunger valve 21, cutting oir the air pressure from the casing 1 by way of the pipe 19. However, should the iiow of liquid upwardly in the tube 2 decrease by not receiving sufficient air pressure from the pipes 14, the air pressure in the casing 1 will again act to open the valve 22 and uncover the ports 28 and thereby restore the flow of liquid from the tube 2 in a desired amount. It is to be understood that the Valve 22 opens and closes in accordance with the decrease and increase of flow of fluid through and from the tube 2.

Having described the invention, we claim:-

1. A means for removing oil from Wells, comprising a well casing, tubing extending down into the casing to collect the mixed oil and gas issuing from the oil bearing stratum and a packing between the tubing and casing, said tubing, above the packing, having a sand deflector, a. weighted valve for closing the mouth of the deflector, and a cage having openings therethrough for the valve, and the said valve being unseated by the flow of oil and gas through the cage, said tubing having a pipe therein communicating with the casing, a valve casing on the pipe arranged in the tubing, a spring iniiuenced valve stern for closing the pipe, a plunger valve iixed on the stem, said valve casing having openings therethrough that are normally covered by the plunger valve, a disc head on the outer and depending end of the stem, and means for introducing a iiuid under pressure at determined intervals to cause the unseating of the stern and plunger valve, to introduce such fluid into the tubing when the ow through the tubing is decreased and for creating a suction in the tubing to increase such iiow and the iiowing oil exerting a determined pressure against the disc head designed to move the stern to cause the plunger valve to close the openings in the casing and to likewise close the fluid inlet pipe connected with the casing.

2. A device according to claim 1, in which lower pressure iiuid inlet pipes are formed in the flow tube and communicate with the casing, check valves for said pipes and the cages thereof provided With openings.

HARLEY E. BROCK. FRANK C. BRAZELL.

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